Marudina Upgraded No-Drill Window AC Bracket, Adjustable Window Air Conditioner Support Bracket for Single/Double Hung Windows, Heavy-Duty Holds 300lbs,Easy Installation, Rustproof Aluminum

No-Drill Design - Protects Windows & WallsMarudina Window Air Conditioner Support Bracket Snap-on legs with anti-slip rubber pads install without drilling. Leaves no marks - perfect for apartments/historic homes | Dual-Arm Support - Holds 300 lbs SecurelyHeavy-duty aluminum alloy frame with extension beams distributes weight 2x better. Inner support extends 28.9"45.4", ideal for single or double-hung windows with sills, ensuring secure and stable installation | 3-Step Adjustable System - Single person operationLatch design allow Support leg distance adjustments with one hand. Built-in graduated lines help users level the window ac brackets more precisely.Senior-friendly installation | Sturdy & Durable:Marudina window ac bracket is made of heavy-duty aluminum alloy, offering excellent rust and corrosion resistance for humid/freezing climates | 360 Anti-Slip Grip - Storm-Proof StabilityThe ac window bracket is equipped with thick rubber pads increase friction by 250%. Silent & stable even in storms